All vulnerabilities
CVE-2021-28310

Microsoft Win32k Privilege Escalation Vulnerability

Microsoft Win32kOperating systems
Open in ThreatlineRecord JSON
CVSS
7.8High
ExploitationExploited in the wildAdded to KEV 3 Nov 2021CISA KEV
Exploit odds (EPSS)8.40%Chance of exploitation activity in the next 30 days, higher than 94% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Federal deadline17 Nov 2021Remediation due date for US federal agenciesCISA KEV
CISA required actionApply updates per vendor instructions. CISA KEV

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Timeline

  1. 13 Apr 2021, 19:32 UTCPublishedCVE List
  2. 3 Nov 2021Added to CISA KEVCISA KEV

Description

Microsoft Windows Win32k contains an unspecified vulnerability that allows for privilege escalation.

Text from CVE List

Affected versions 10

  • Windows 10 Version 1803affected: 10.0.0 before publicationCVE List
  • Windows 10 Version 1809affected: 10.0.0 before publicationCVE List
  • Windows Server 2019affected: 10.0.0 before publicationCVE List
  • Windows Server 2019 (Server Core installation)affected: 10.0.0 before publicationCVE List
  • Windows 10 Version 1909affected: 10.0.0 before publicationCVE List
  • Windows Server, version 1909 (Server Core installation)affected: 10.0.0 before publicationCVE List
  • Windows 10 Version 2004affected: 10.0.0 before publicationCVE List
  • Windows Server version 2004affected: 10.0.0 before publicationCVE List
  • Windows 10 Version 20H2affected: 10.0.0 before publicationCVE List
  • Windows Server version 20H2affected: 10.0.0 before publicationCVE List

References 3